Butterfly Weed (Asclepias tuberosa) has stunning bright orange flowers that stand out against its dark green foliage. Part of the Milkweed Family, Butterfly Weed is a host plant for Monarch Butterflies. Although sometimes called Orange Milkweed, this plant does not leak white sap like Common Milkweed.   Light: Full Sun, Part Sun Moisture: Medium to Dry Soil Type: Well-Drained, Sandy, Loamy, Clay Soil pH: 5.5-6.5 Average Height: 1-2 Feet Flowers: Bright orange, flat-topped clusters 2-5 inches across Bloom Time: June–August Native Region: Across most of North America Wildlife: Monarch and Gray Hairstreak